Non-isothermal Primary Crystallization Kinetics of the Amorphous Fe85. 3B11P3Cu0. 7 Alloy

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MIRZAEI SIMA; ARABI HOSSEIN; SAGHAFIAN HASSAN; BEITOLLAHI ALI

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Journal: JOURNAL OF NANOSTRUCTURES Year:2019 | Volume:9 | Issue:3 Page(s): 442-452

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Title

Non-isothermal Primary Crystallization Kinetics of the Amorphous Fe85. 3B11P3Cu0. 7 Alloy

Author(s)

MIRZAEI SIMA | ARABI HOSSEIN | SAGHAFIAN HASSAN | BEITOLLAHI ALI | Issue Writer Certificate

Keywords

Avrami exponent

Crystallization kinetics

Isoconversional methods

Isokinetic methods

Abstract

In the present research, the primary Crystallization kinetics of the amorphous Fe85. 3B11P3Cu0. 7 alloy was analyzed using non-isothermal DSC measurements. The average and local activation energies, Ea, were determined by different isokinetic and Isoconversional methods. The results obtained for activation energy in this research, show that due to the complexity of the primary crystallization process in this alloy, Isoconversional methods are more suitable than the isokinetic ones. The Avrami exponents lie between about 1 and 2 in a wide temperature range of 370˂ T≤ 410˚ C. This indicates that one dimensional growth of nuclei with a decreasing rate of nucleation is the main mechanism during nonisothermal primary crystallization process of the amorphous Fe85. 3B11P3Cu0. 7 alloy which is a new finding for this alloy. Study of magnetic properties in the amorphous and nanocrystalline states revealed that annealing the amorphous ribbons at 440˚ C for 10 minutes gives rise to a significant increase in saturation magnetization, Ms, i. e. from 144 in as-spun to 201 emu/g in annealed states. This amount of Ms makes this material a good candidate for different applications, especially in transformer cores.

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APA: Copy

MIRZAEI, SIMA, ARABI, HOSSEIN, SAGHAFIAN, HASSAN, & BEITOLLAHI, ALI. (2019). Non-isothermal Primary Crystallization Kinetics of the Amorphous Fe85. 3B11P3Cu0. 7 Alloy. JOURNAL OF NANOSTRUCTURES, 9(3), 442-452. SID. https://sid.ir/paper/744206/en

Vancouver: Copy

MIRZAEI SIMA, ARABI HOSSEIN, SAGHAFIAN HASSAN, BEITOLLAHI ALI. Non-isothermal Primary Crystallization Kinetics of the Amorphous Fe85. 3B11P3Cu0. 7 Alloy. JOURNAL OF NANOSTRUCTURES[Internet]. 2019;9(3):442-452. Available from: https://sid.ir/paper/744206/en

IEEE: Copy

SIMA MIRZAEI, HOSSEIN ARABI, HASSAN SAGHAFIAN, and ALI BEITOLLAHI, “Non-isothermal Primary Crystallization Kinetics of the Amorphous Fe85. 3B11P3Cu0. 7 Alloy,” JOURNAL OF NANOSTRUCTURES, vol. 9, no. 3, pp. 442–452, 2019, [Online]. Available: https://sid.ir/paper/744206/en

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